CN1255004A - Intelligent audio amplifier system for meeting - Google Patents
Intelligent audio amplifier system for meeting Download PDFInfo
- Publication number
- CN1255004A CN1255004A CN 98124935 CN98124935A CN1255004A CN 1255004 A CN1255004 A CN 1255004A CN 98124935 CN98124935 CN 98124935 CN 98124935 A CN98124935 A CN 98124935A CN 1255004 A CN1255004 A CN 1255004A
- Authority
- CN
- China
- Prior art keywords
- extension set
- speech
- chairman
- extension
- work
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Circuit For Audible Band Transducer (AREA)
Abstract
An intelligent audio amplifier system for meeting is composed of main controller, meeting telephone repeater, public network switch, chairman extension, several vice-chairman extensions and several deputy extensions, all of which are controlled by own microprocessors. Said chairman extension has the function of forced insertion and rejection. Said vice-chairman extension has insertion function. Only either of deputy extensions can allow to talk. A balanced feed speech mode and a broad-band audio amplifier control mode are used. Its advantages are high flexibility and reliability, low interference for long-distance transmission and high sound quality.
Description
Intelligent audio amplifier system for meeting is the special-purpose audio amplifier system for meeting for the design of constituent parts meeting room.Belong to the telecommunications field.
Existing audio amplifier system for meeting adopts centralized control.By single CPU control whole system, underaction.Whole system poor reliability, interference are greatly during distance; Its chairman's extension set can only insert the extension set of making a speech, and can not cancel (dismounting) extension set of making a speech.The uncontrollable meeting-place of (as court) chairman extension set when disorder in the meeting-place; Must determine speech extension set number before this system uses, use inconvenience; Some system self needs the charged pool power supply and the big parallel way of some employing MIC of system, and output level is low, and frequency response is poor.
The purpose of the present invention's invention is to overcome the defective of prior art, invents a kind of intelligent audio amplifier system for meeting.Native system adopts decentralized control.Governor circuit and all kinds of extension set all each have the control of a slice microprocessor; Control bus adopts " cross complaint interlocking " technology, does not establish special dispatching management CPU; Its chairman's extension set has trunk offering to toll breakdown to make a speech extension function and increases vice-president's extension set form (increase can directly make a speech extension set); Native system adopts " common-battery principle " feed and adopts the audio frequency wide-band amplifier.
The purpose of the present invention's invention is achieved through the following technical solutions.System is made up of main controller, conference operation device, public network switch, chairman's extension set, some vice-president's extension sets and some representative extension sets.Its main controller is made up of central control unit, change-over circuit, high-fidelity power amplifier, power supply, background music program source, control bus, lead-out terminal.Wherein central control unit is made up of balanced feeding speech circuit, beep generator, o controller, central controller (CPU), power supply, control bus and audio output.
The invention has the advantages that owing to the employing decentralized control, the complete machine flexibility and reliability, interference is little when the length Distance Transmission, tonequality good; Because chairman divides function control meeting-place, can insert or cancel the representative speech; Because vice-president's extension set quantity is not retrained by the feed factor, use flexibly.After session startup, can arbitrarily get involved public address system, can be with chairman's machine, represent the extension set intercommunication; Owing to adopt balanced feeding, reduced cross-talk and noise; Owing to adopt the audio frequency wide-band amplifier, the signal to noise ratio height; In control bus, represent " C " line cross complaint interlock mode between the extension set.This mode does not need main control computer or chairman's extension set to control, but represents control mutually between the extension set.After session startup, under chairman's machine enabled condition, can take public address system, take back other domestic consumers of blockade and take again; Telephony interface can be held point-to-point videoconference.
Below in conjunction with drawings and Examples the present invention is done further and carefully to state.
Fig. 1 is that system of the present invention forms schematic diagram.1 is main controller, and 2 is the conference operation device, and 3 is the public network interchanger, and 4 is chairman's extension set, and 5 is vice-president's extension set, and 6 are the representative extension set.
Fig. 2 is the block diagram of main controller of the present invention.The 7th, control bus, the 8th, lead-out terminal.
Fig. 3 is the block diagram of main controller central control unit of the present invention.
Fig. 4 is the electrical schematic diagram of main controller central control unit of the present invention.
Fig. 5 is chairman's machine of the present invention, vice-president's machine and represents the extension set electrical schematic diagram.CYM represents chairman's extension set, CYZ vice chairman extension set, and CYY represents to represent extension set.
One. system work process is such.
Background music (or other sources of sound) → each Exgt Bat extension battery lamp is play in start → meeting-place bright → chairman's extension set press S key startups → sound amplifier output " ding-dong " (or other prompt tones) → background music cut-out → chairman extension set green light is bright → chairman's extension set work (speech).
As represent extension set to request to make a speech, chairman's extension set by " conversion " key → chairman's extension set green light little bright → conversion key red light bright (chairman's extension set suspend speech) → need speaker extension set is by the bright operating state (speech) that enters of S key → green light.
If chairman's extension set need chip in, it is bright press conversion key → chairman's extension set green light, represent the extension set green light little bright → chairman's extension set works (speech), represents extension set temporary close → chip in to finish by conversion key → represent extension set to recover automatically to make a speech again.If need cancelling, chairman's extension set represent extension set speech → chairman extension set after 1 second → 20 seconds, to represent extension set to restore automatically by conversion key.
Meeting adjourned, and chairman's extension set is pressed S key → recovery background music.
After the session startup, chairman's extension set can be talked with vice-president's extension set of making a speech, but can not remove the work of vice-president's extension set by force.Represent extension set that an extension set speech can only be arranged, other users that need make a speech must wait this extension set to restore back (green light puts out) and just can take.
Two. the course of work of the control unit of main controller such as Fig. 4.
Start back program source signal amplifies output by socket XH2-1, XH2-4 → relay K 1A, K1B → socket XH2-3, XH2-2 through power amplifier.
After the extension set of serving as chair is pressed the S key, power supply+24V → balanced feeding coil L2 → A point → socket DB-1 → A line (speech line) chairman's extension set (formation current supply circuit) B line → DB-6 → B point → balance coil L1 → IC7-1 → IC7-2 →-24V.Make IC7 work, IC7-4 becomes 0V → IC1-7 voltage by 5V and becomes 0V → startup main control unit by 5V, carries out to start working procedure → IC1-2 output 5V through R8 → IC3-1 → IC3-2 → ground IC3 work.IC3-4 becomes 0V → relay K 1 action → lead-out terminal XH2-1, XH2-4 by 24V and is transferred to AB line speech circuit → import 0 current potential (DB-3F line become 0V) → IC4-3 output+24V → LED2 → IC8-1 → IC8-2 → R2 → DB-3F line → through chairman's extension set to ground through bus F by chairman's extension set, make IC8 action → IC8-4 voltage move → connect electric K2A adhesive for-24V → relay K 2, voice signal is through DB-1A point → C8 → C9 → T1 → C7 → C10 → DB-6B point formation loop.T1 time level is exported voice signal through K2A contact → K1B, K1A contact → XH2-3, XH2-2, amplifies output through power amplifier.
Meeting adjourned, and chairman's extension set becomes 5V by S key → AB line loop interruption → IC7 shutoff → IC1-7 voltage by 0V again, and CPU carries out bolt down procedure, and the K1 relay discharges, and recovers background music.IC1 adopts latest generation microprocessor PIC12C508.
Three. chairman's extension set CPU adopts PIC12C508.Each input/output port is allocated as follows:
The CPU pinout
Chairman's extension set course of work such as Fig. 5,
| ??1 | ????2 | ????3 | ????4 | ??5 | ??6 | ??7 | ??8 |
| ?+5V | The F signal | Relay drives | Conversion key | Speech control | Start key | I signal | Ground |
1 after system connects with the mains, by the DE of main controller control bus end send 24V voltage →+24V (D point) → DB1-8 → D6 → IC1-1 → IC1-3 (output 5V) IC1-2 → D7 → FU → DB1-4 →-24V (E point).+ 24V → DB1-4 → D8 → R2 → LED1 (red light) → ground → D5 → DB1-8 →-24V, the LED1 lamp is bright.
2 serve as chair extension set press the S1 key after → IC2-6 voltage becomes 0V → startup speech requisition procedure → IC2-3 output 5V through IC4-1 → IC4-2 → ground by 5V.IC4 work; IC4-4 output becomes 0V → relay K by 24V moves → send voice signal through A line → DP1-1 → polar protective circuit → relay tip K1A → LED2 → audio frequency wide-band amplifier (transistor N1, N2 work) by microphone M1 by main controller AB line feed-in speech power supply; after N1, N2 amplify, output to main controller through A, B line.
5V is through R3 → IC5-1 → IC5-2 → ground in IC2-2 output simultaneously.IC5 work, IC5-4 becomes 0V by 5V, and DB1-3 F point is through bus → main controller (control K2 action).IC2-7 → block other extension set work through R1 → bus " I " → DB1-2 output 0V.
3 serve as chair extension set when needing the speech of other extension sets, press conversion key S2 through SW1-4, make IC2-4 become 0V → startups by 5V and block removing program → IC2-7 and export 5V through DB1-2, make bus " I " remove each extension set locking signal for high level.
4 are representing the extension set duration of work, when chairman's extension set need be chipped in, click the S2 key, and IC2-4 becomes 0V by 5V and carries out the program of chipping in, and IC2-7 output this moment 0V → through DB1-2 → bus " I " is that 0 voltage → cut-out is just at the speech amplifying circuit of speaker's extension set.Removing program is blocked in (or pressing the S2 key again) → execution after 8 seconds, and IC7-2 output 5V → bus " I " is 5V, and extension set recovers speech.
5 when needs cancellation during just at speaker's extension set, press the S2 key and surpasses 1 second, and IC2-4 becomes the 0V time and surpasses 1 second, and CPU carries out and tolls breakdown speech extension set recovery (can not take again) behind program → 18 second.
6 at chairman's extension set duration of work, and relay K B contact disconnects, and loud speaker is not worked, and to avoid back coupling.
Four. vice-president's extension set CPU adopts PIC12C508, and each input/output port is allocated as follows:
The CPU pinout
Vice-president's extension set course of work such as Fig. 5.1, serve as chair after extension set lifts a blockade, bus " I " signal is 5V, through DB1-2
| ???1 | ????2 | ????3 | ???4 | ??5 | ????6 | ???7 | ??8 |
| ??+5V | I signal | Relay drives | Empty | Speech control | ????S1 | The C line shows engaged line | Ground |
→ SW3-6 → IC2-2 is for procedure identification.The vice-president by the S1 key after → IC2-6 by 5V become 0V → execution speech requisition procedure → IC2-3 output 5V → IC4 work → relay K work → voice power supply by DB1-8+24V → D6 → L1 → relay K A contact → LED2 → N1 N2 → L2 → D7 → FU → DB1-4 (E) →-24V.The work of audio frequency wide-band amplifier, voice signal is coupled to the AB line through C11 C10.
2, after the actuating of relay, the KB contact disconnects, and this machine loud speaker is not worked.
3, IC2-7 output becomes 0V by 5V, is 0V through SW4-5 → bus " C " point → DB1-7 voltage, blocks and represents extension set to take.
4, when representing extension set (or the chairman's extension set that has started) in speech, vice-president's extension set is pressed the S1 key, carries out the program → IC2-3 that chips in and is input as 5V → IC4 work → actuating of relay → speech circuit work.Voice signal is coupled to the AB line through C10 C11.
5, the speech of vice-president's extension set finishes to press the S1 key, and IC2-6 becomes 0V by 5V, carries out reposition routine → IC2 and restores, and IC2-7 becomes 5V by 0V, becomes 5V through DB1-7 → C, removes the locking signal to extension set.
Five. represent extension set CPU to adopt PIC12C508, each input/output port is allocated as follows:
The CPU pinout
| ????1 | ????2 | ??????3 | ??????4 | ?????5 | ???6 | ?????7 | ????8 |
| ????+5V | Empty | Relay drives | I signal | Speech control | ???S1 | The C line traffic control | Ground |
Represent the extension set course of work such as Fig. 5
1. after the extension set of serving as chair was lifted a blockade, bus " I " signal was 5V, and this moment, bus " C " signal was 5V if no user takies speech.After representing extension set by S1 → IC2-6 becomes 0V by 5V, carries out speech requisition procedure → IC2-3 output 5V → IC4 work → relay K work → contact KA adhesive → voice feed voltage by bus DB1-1A point → D2 → KA contact → N1, N2 → D3 → DB1-6 (B point).Sound circuit work.Program makes the IC2-7 mouth change output port into by input port simultaneously, and exports 0 voltage.Make the C line become 0V by 5V, other each extension sets read in C line signal in program be " hurrying " signal, blocked extension set and taken.
2, serve as chair extension set when chipping in, control bus " I " signal becomes 0V by 5V, carry out the program of chipping in through DB1-2 → SW4-5 → IC2-7 CPU, " I " becomes 0 signal＜0.5S, carry out the 5V signal that interrupted speech program → IC2-5 output 8S in 8 seconds, through IC3-1 → IC3-2 → ground, IC3 work ends N2 N1, closes speech amplifying circuit (8S).When " I " became 0 signal＞1S, after CPU carried out bolt down procedure 18S, extension set restored voluntarily.
3, the extension set speech finishes to press the S1 key, and CPU carries out reposition routine → IC2-3 and exports 0V → relay reset, IC2 → output 5V release busy signal.The C point becomes 5V.
Like this, in the control bus, represent " C " line cross complaint interlock mode between the extension set.This mode does not need main control computer or chairman's extension set to control, but represents control mutually between the extension set.When no extension set took, the C line was a high potential, and on behalf of extension set, each do the input port and handle, for procedure identification.After taking, this representative extension set is about to this mouthful and changes delivery outlet into, and promptly output low level is set to low level with the C line by high level, and other extension set busy signals are provided, and blocks other extension sets and takies.This mode has been omitted dispatching management CPU.
Claims (7)
1. intelligent audio amplifier system for meeting, it has conference operation device, public network switch, it is characterized in that it also has main controller, chairman's extension set, some vice-president's extension sets and some representative extension sets to form; The central control unit of its main controller, chairman's extension set, vice-president's extension set and represent extension set that a slice microprocessor control is all respectively arranged.
2. intelligent audio amplifier system for meeting according to claim 1, it is characterized in that in its central control unit of main controller, adopt balanced feeding speech mode, after the extension set of serving as chair is pressed the S key, power supply+24V → balanced feeding coil L2 → A point → socket DB-1 → A line (speech line) chairman's extension set (formation current supply circuit) B line → DB-6 → B point → balance coil L1 → IC7-1 → IC7-2 →-24V.
3. intelligent audio amplifier system for meeting according to claim 1, the chairman's extension set that it is characterized in that it interposing function of chipping in, representing the extension set duration of work, when chairman's extension set need be chipped in, click the S2 key, IC2-4 becomes 0V by 5V and carries out the program of chipping in, IC2-7 output this moment 0V → through DB1-2 → bus " I " is that 0 voltage → cut-out is just at the speech amplifying circuit of speaker's extension set, removing program is blocked in (or pressing the S2 key again) → execution after 8 seconds, IC7-2 output 5V → bus " I " is 5V, and extension set recovers speech.
4. chairman's extension set of intelligent audio amplifier system for meeting according to claim 3, the chairman's extension set that it is characterized in that it is chipped in and is tolled breakdown function, when needs are cancelled just at speaker's extension set, press the S2 key above 1 second, IC2-4 becomes the 0V time and surpasses 1 second, and the speech extension set restored (can not take) again after CPU carried out and tolls breakdown program → 18 second.
5. vice-president's extension set of intelligent audio amplifier system for meeting according to claim 1, the vice-president's extension set that it is characterized in that it function of chipping in, when representing extension set (or the chairman's extension set that has started) in speech, vice-president's extension set is pressed the S1 key, execution program → the IC2-3 that chips in is input as 5V → IC4 work → actuating of relay → speech circuit work, and voice signal is coupled to the AB line through C10C11.
6. the representative extension set of intelligent audio amplifier system for meeting according to claim 1, the representative extension set that it is characterized in that it has only a representative speech, in the control bus, represent " C " line cross complaint interlock mode between the extension set, after representing extension set by S1 → IC2-6 becomes 0V by 5V, carry out speech requisition procedure → IC2-3 output 5V → IC4 work → relay K work → contact KA adhesive → voice feed voltage by bus DB1-1A point → D2 → KA contact → N1, N2 → D3 → DB1-6 (B point), sound circuit work; Program makes the IC2-7 mouth change output port into by input port simultaneously, and defeated 0 voltage, makes the C line become 0V by 5V, and other each extension sets read in C line signal in program be " hurrying " signal, blocked extension set and taken; The extension set speech finishes to press the S1 key, and CPU carries out reposition routine → IC2-3 and exports 0V → relay reset, IC2 → output 5V release busy signal, and the C point becomes 5V.
7. the representative extension set of intelligent audio amplifier system for meeting according to claim 6, it is characterized in that its employing audio frequency wide-band amplifier work control mode, when the extension set of serving as chair is chipped in, control bus " I " signal becomes 0V by 5V, carries out the program of chipping in through DB1-2 → SW4-5 → IC2-7CPU, and " I " becomes 0 signal＜0.5S, carry out the 5V signal that interrupted speech program → IC2-5 output 8S in 8 seconds, through IC3-1 → IC3-2 → ground, IC3 work ends N2N1, closes speech amplifying circuit (8S); When " I " became 0 signal＞1S, after CPU carried out bolt down procedure 18S, extension set restored voluntarily.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98124935 CN1255004A (en) | 1998-11-19 | 1998-11-19 | Intelligent audio amplifier system for meeting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98124935 CN1255004A (en) | 1998-11-19 | 1998-11-19 | Intelligent audio amplifier system for meeting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1255004A true CN1255004A (en) | 2000-05-31 |
Family
ID=5228912
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98124935 Pending CN1255004A (en) | 1998-11-19 | 1998-11-19 | Intelligent audio amplifier system for meeting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1255004A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484178C (en) * | 2004-11-15 | 2009-04-29 | 索尼株式会社 | Microphone system and microphone apparatus |
| CN1976374B (en) * | 2006-12-08 | 2010-12-22 | 王祥贵 | Radio digital conference system |
| US8452027B2 (en) | 2007-08-09 | 2013-05-28 | Kabushiki Kaisha Audio-Technica | Audio conference system |
-
1998
- 1998-11-19 CN CN 98124935 patent/CN1255004A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100484178C (en) * | 2004-11-15 | 2009-04-29 | 索尼株式会社 | Microphone system and microphone apparatus |
| CN1976374B (en) * | 2006-12-08 | 2010-12-22 | 王祥贵 | Radio digital conference system |
| US8452027B2 (en) | 2007-08-09 | 2013-05-28 | Kabushiki Kaisha Audio-Technica | Audio conference system |
| CN101779442B (en) * | 2007-08-09 | 2016-10-12 | 欧力天工股份有限公司 | Audio conference system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100502499C (en) | Storied building visible intercommunication system | |
| CN1255004A (en) | Intelligent audio amplifier system for meeting | |
| CN2367035Y (en) | Intelligent audio amplifier for meeting use | |
| CN201266992Y (en) | Four-wire system building video talking sub-telephone | |
| CN1085368A (en) | Program-controlled communication system for enterprise | |
| CN201104361Y (en) | Intelligent elevator intercommunication system | |
| CN2620447Y (en) | Mainframe using telephone program control exchanger as gate inhibition interphone system for entrance of housing estate | |
| CN2531594Y (en) | Hands-free receiver with extended function module | |
| CN2274367Y (en) | Message-leaving door-bell device | |
| CN2631147Y (en) | Unhanging-up real-time music-prompting telephone receiver | |
| CN2414565Y (en) | Fully automatic telephone multi-function alarm system controller | |
| CN87211406U (en) | Microcomputer controlled telephone operating picket device | |
| CN1402510A (en) | Digital recording system | |
| CN2445516Y (en) | Telephone autoamtic broadcast system controller | |
| CN2796262Y (en) | USB VoIP common telephone adaptor | |
| CN2598284Y (en) | Mobile phone fixed net converter containing speech | |
| CN2131259Y (en) | Party-line system for multiple group-telephones | |
| CN2454995Y (en) | Telephone automatic changeover device | |
| CN2717133Y (en) | Network communication terminal | |
| CN2419758Y (en) | Telephone controlling electric appliance | |
| CN1160924C (en) | Handfree earphone device for plug-in use of multiple communication machines | |
| CN2140591Y (en) | Wired transceiver | |
| CN2153185Y (en) | Multiparty telephone | |
| CN2235683Y (en) | Telephone connection box with anti-fraudulent use function | |
| CN2513306Y (en) | Multiple cable mobile phone earphone device capable of using by multiple users at the same time |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |